Electrospun fluorescein/polymer composite nanofibers and their photoluminescent properties

Fluorescein/polyvinyl pyrrolidone （PVP） composite nanofibers with different fluorescein loadings （with a weight concentration of 0-5.0%） are fabricated via electrospinning. Morphologies, structures and photoluminescent （PL） prop- erties of these straight, helical or wavelike fibers are characterized...

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Published inChinese physics B Vol. 21; no. 9; pp. 514 - 519
Main Author 张志华 龙云泽 尹红星 孙彬 郑杰 张红娣 纪新明 顾长志
Format Journal Article
LanguageEnglish
Published 01.09.2012
Subjects
Biomedical materials
Electrospinning
Fibers
Fluorescein
Fluorescence
Nanofibers
Photoluminescence
Quenching
Scanning electron microscopy
光致发光性质
复合纳米纤维
扫描电子显微镜
生物医学应用
聚乙烯基吡咯烷酮
聚合物
荧光素
静电纺丝
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ISSN1674-1056
2058-3834
1741-4199
DOI10.1088/1674-1056/21/9/097805

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Summary:Fluorescein/polyvinyl pyrrolidone （PVP） composite nanofibers with different fluorescein loadings （with a weight concentration of 0-5.0%） are fabricated via electrospinning. Morphologies, structures and photoluminescent （PL） prop- erties of these straight, helical or wavelike fibers are characterized by scanning electron microscopy （SEM）, fluorescence microscopy and a spectrophotometer. It is found that the maximum emission of the as-spun fluorescein/PVP fibers occurs at 510 nm. The PL intensity of the composite fiber increases with fluorescein concentration, then fluorescence quenching appears when the concentration reaches 1.67%. The mechanism of fluorescence quenching of fiuorescein is discussed. In addition, the composite fibers exhibit a much stronger PL intensity than fluorescein/PVP bulk film owing to larger specific surface area, which makes them promising materials for biomedical applications such as probes and sensors.
Bibliography:Fluorescein/polyvinyl pyrrolidone （PVP） composite nanofibers with different fluorescein loadings （with a weight concentration of 0-5.0%） are fabricated via electrospinning. Morphologies, structures and photoluminescent （PL） prop- erties of these straight, helical or wavelike fibers are characterized by scanning electron microscopy （SEM）, fluorescence microscopy and a spectrophotometer. It is found that the maximum emission of the as-spun fluorescein/PVP fibers occurs at 510 nm. The PL intensity of the composite fiber increases with fluorescein concentration, then fluorescence quenching appears when the concentration reaches 1.67%. The mechanism of fluorescence quenching of fiuorescein is discussed. In addition, the composite fibers exhibit a much stronger PL intensity than fluorescein/PVP bulk film owing to larger specific surface area, which makes them promising materials for biomedical applications such as probes and sensors.
11-5639/O4
nanoflbers, electrospinning, fluorescence, self-quenching
Zhang Zhi-Hua, Long Yun-Ze, Yin Hong-Xin, Sun Bin Zheng Jie, Zhang Hong-Di, Ji Xin-Ming, and Gu Chang-Zhi a） College of Physics, Qingdao University, Qingdao 266071, China b） State Key Laboratory of ASIC g： System, Department of Mieroelectronics, Fudan University, Shanghai 200433, China c） Institute of Physics, Chinese Academyi（~d~Z~ of Sciences, Beijing 100190, China d）State Key Laboratory Cultivation Base of New Fiber Materials g： Modern Textile, Qingdao University, Qingdao 266071, China e） Key Laboratory of Photonics Materials and Technology in Universities of Shandong （Qingdao University）, Qingdao 266071, China
ObjectType-Article-1
SourceType-Scholarly Journals-1
ObjectType-Feature-2
content type line 23
ISSN:1674-1056
2058-3834
1741-4199
DOI:10.1088/1674-1056/21/9/097805